Table 7: Economic analysis due to the application of NP fertilizer levels and plant spacing on marketable seed yield of Bombay Red onion grown at Shewa Robit.
N and P2O5 Rate (kg ha-1) |
Spacing (cm) |
Average Seed Yield (kg ha-1) |
Adjusted Seed Yield (kg ha-1) |
Gross Field Benefit (ETB ha-1) |
Total Cost (ETB ha-1) |
Net Benefit (ETB ha-1)
|
Marginal Return |
Marginal Rate of Return (%) |
Benefit Cost Ratio |
0 × 0 |
10 ×20×40 |
267 |
240.3 |
96120 |
60000 |
36120 |
0.602 |
60.2 |
0.602 |
85.5 × 86.25 |
10 ×20×40 |
459 |
413.1 |
165240 |
65578 |
99662 |
11.39 |
1139 |
1.52 |
114 × 115 |
10 ×20×40 |
662. |
595.8 |
238320 |
67464.8 |
170855.2 |
18.04 |
1804 |
2.53 |
142.5 × 143.75 |
10 ×20×40 |
560. |
504 |
201600 |
69330.2 |
132269.8 |
10.30 |
1030 |
1.907 |
142 × 69 |
10 ×20×40 |
611. |
549.9 |
219960 |
67039.2 |
152920.8 |
16.59 |
1659 |
2.28 |
0 × 0 |
20×30×50 |
364. |
327.6 |
131040 |
60000 |
71040 |
1.184 |
118.4 |
1.184 |
85.5 × 86.25 |
20×30×50 |
518. |
466.2 |
186480 |
65578 |
120902 |
8.939 |
893.9 |
2.015 |
114 × 115 |
20×30×50 |
1103. |
992.7 |
397080 |
67464.8 |
329615.2 |
34.639 |
3463.9 |
4.885 |
142.5 × 143.75 |
20×30×50 |
804. |
723.6 |
289400 |
69330.2 |
220069.8 |
15.972 |
159.72 |
3.174 |
142 × 69 |
20×30×50 |
847. |
762.3 |
304920 |
67039.2 |
237880.8 |
23.701 |
2370.1 |
3.548 |
0 × 0 |
10×40 |
435. |
391.5 |
156600 |
60000 |
96600 |
1.61 |
161 |
1.61 |
85.5 × 86.25 |
10×40 |
479. |
431.1 |
172440 |
65578 |
106862 |
1.839 |
183.9 |
1.629 |
114 × 115 |
10×40 |
837. |
753.3 |
301320 |
67464.8 |
233855.2 |
18.386 |
1838.6 |
3.466 |
142.5 × 143.75 |
10×40 |
713 |
641.7 |
256680 |
69330.2 |
187349.8 |
9.726 |
972.6 |
2.70 |
142 × 69 |
10×40 |
906. |
815.4 |
326160 |
67039.2 |
259120.8 |
23.08 |
2308 |
3.865 |
0 × 0 |
10×50 |
350 |
315 |
126000 |
60000 |
66000 |
1.1 |
110 |
1.1 |
85.5 × 86.25 |
10×50 |
504. |
453.6 |
181400 |
65578 |
115822 |
8.931 |
893.1 |
1.766 |
114 × 115 |
10×50 |
614 |
552.6 |
221040 |
67464.8 |
153575.2 |
11.73 |
1173 |
2.276 |
142.5 × 143.75 |
10×50 |
627. |
564.3 |
225720 |
69330.2 |
156389.8 |
9.68 |
968 |
2.255 |
142 × 69 |
10×50 |
967. |
870.3 |
348120 |
67039.2 |
281080.8 |
30.55 |
3055 |
4.19 |
0 × 0 |
10×30 |
460. |
414 |
165600 |
60000 |
105600 |
1.16 |
116 |
1.16 |
85.5 × 86.25 |
10×30 |
539. |
485.1 |
194040 |
65578 |
128462 |
4.098 |
409.8 |
1.958 |
114 × 115 |
10×30 |
1181. |
1062.9 |
425160 |
67039.2 |
358120.8 |
35.87 |
3587 |
5.34 |
142.5 × 143.75 |
10×30 |
627. |
564.3 |
225600 |
69330.2 |
156269.8 |
5.43 |
543 |
2.253 |
142 × 69 |
10×30 |
938. |
844.2 |
337680 |
67464.8 |
270215.2 |
22.0 |
2200 |
4.005 |
During experimental period the price of urea and DAP fertilizer was 14 and 16.16 ETB kg-1 and selling price of onion seed was 400 ETB kg-1.